James c



J. C. WILLIAMSON.

CABLE LOCK. APPLICATION FILED MAR. z. 1921.

RENEWED JAN.3.1922.'

Patented Aug. 15, 1922.

gwuantoz entrain 5mmeatent err ea JAMES C. WILLIAMSON, or connnnn,enoneia.

CABLE LOCK.

Application filed March 7, 1921, Serial No. 450,198. Renewedll'anuary 3,1922. Serial No, 526,811.

' T 0 all whom it may concern:

Be it known that I, JAMES C. WILLIAM- soN, a citizen of the UnitedStates, residing at Cordele, in the county of Crisp and State ofGeorgia, have invented a new and useful Cable Look, of which thefollowing is a specification.

This invention relates to sheave or pulley locks, the primary object ofthe invention being to provide a novel form of wedge to A still furtherobject of the invention is the provision of a specially designed cable.engaging surface to prevent the cable from slipping between the lockingelement and the pulley housing.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

Referring to the drawing Figure 1 is an elevational view showing thelocking device as applied to a cable.

Figure 2 is a side elevational view of a pulley and its housing, thesame being partly I bearings to accommodate the shaft, on

- which the pulley 6 operates. I r

The housing 5 is provided with an offset portion 8 that is curved as at9 to accommo- Patented Aug.15,1922.;

date the curved surface of a flexible member 1 such as a cable or thelike.

The pulley 6 is provided with a peripheral groove 10 which is providedwith openings in the base thereof to accommodate the lug 11 formed onone surface of the wedge or locking element 12, it being understood thatthe wedge 12 is provided with a tongue 13 to be footed 0n the peripheralgroove to eliminate lateral movement of the wedge when the same is inoperation,

This wedge is also provided with a grooved'cable engaging surface 17which is formed to correspond with the curvatures of the strands of wiremaking up the cable, so

that when the cable is passed through the '7 5 housing and moved to aposition into engagement with the wall of. the housing, the

' curved 'portions'of the cable will seat themselves in thecorrespondingly-shaped recesses of the block, constituting a perfectlock with out injury tothe cable.

The housing 5 is also provided with a hollow extension 14 by means-ofwhich-the cable 15 may be secured thereto in the'well known manner. I g

In the operation of the deviceassuming that the cable which in thepresent instance is indicated by thereference character 16, is

to be locked against movement in a clockwise direction, over the pulley,the wedge 12 is positioned on the pulley in a manner so that the lugllthereof will beseated in one of the openings in the periphery of thepulley, whereupon movement of the cable 16 in the direction of the arrowas shown by Fig ure 2 of the drawing, will .set up a binding actionbetween the wedge .or looking, memhousing.

It follows that further movement of the cable 16 results in causing thewedge 12 t0 ment thereof. 1

What is claimed as new is In combination with a pulley, pulley hous-'said lug adapted to be positioned in one of as my own, I have heretoa'lfixed my signathe 1 openings to restrict movement (3115 the ture inthe presence of tWo Witnesses. Wee ge with respect to the pulley, ansaid wedge-shaped members adapted to force the JAMES WILLIAMSON cableinto engagement With the inner Wall Witnesses: of the housing. IVY E.SIMPSON,

In testimony that I claim the foregoing AGNEs ROGKELLI.

